Device and Method for Driving Plasma Display Panel

1. A method for driving a plasma display panel including a scan electrode and a sustain electrode provided in parallel on a first substrate, and an address electrode provided on a second substrate, the address electrode crossing the scan electrode and the sustain electrode, the method comprising: during a reset period, applying a ramp voltage to the sustain electrode to a first voltage after a previous sustain period is complete; maintaining the address electrode and the sustain electrode at a second voltage, and applying a rising ramp voltage to the scan electrode, the rising ramp voltage gradually rising from a third voltage to a fourth voltage, the third voltage being less than a discharge firing voltage with respect to the sustain electrode and the fourth voltage being greater than the discharge firing voltage; applying a falling ramp voltage to the scan electrode while maintaining the sustain electrode at a first bias voltage, the falling ramp voltage gradually falling to a predetermined voltage from the third voltage; and maintaining the sustain electrode at a second bias voltage below the first bias voltage while maintaining the scan electrode at the predetermined voltage after the applying a falling ramp voltage.

2. The method of claim 1 , wherein the second voltage is a reference voltage.

3. The method of claim 1 , wherein the second bias voltage is substantially identical to the third voltage.

4. The method of claim 1 , wherein the second voltage is a negative voltage.

5. The method of claim 1 , wherein the predetermined voltage has an equal magnitude and opposite polarity to the third voltage.

6. A plasma display panel driver, comprising: a plasma panel comprising a plurality of address electrodes, and first electrodes and second electrodes crossing the address electrodes, the first electrodes and the second electrodes being in pairs and parallel to each other, and a crossing area of the address electrode and the first electrodes and the second electrodes forming a discharge cell; a controller for externally receiving video signals, and generating an address driving signal, first electrode driving signals and second electrode driving signals; an address driver for receiving the address driving signal from the controller, and applying a display data signal for selecting a discharge cell to be displayed to the address electrode; a first driver for receiving the first electrode driving signals from the controller, and applying a voltage to a first electrode of a discharge cell selected for discharge to generate discharge in the discharge cell; and a second driver for receiving the second electrode driving signals from the controller, and applying a voltage to a second electrode of the discharge cell selected for discharge so that the discharge cell selected for discharge maintains discharging for a predetermined time, wherein the first driver applies a voltage that is ramp-risen to a first voltage level to the first electrode, maintains the voltage at a second voltage level below the first voltage level, ramp-falls the voltage to a third voltage level, and maintains the voltage at the third voltage level, and wherein the second driver applies a first bias voltage to the second electrode while the voltage at the first electrode is ramp-fallen to the third voltage level, and applies a second bias voltage below the first bias voltage to the second electrode while the first electrode is maintained at the third voltage level.

7. The PDP driver of claim 6 , wherein the voltage level of the second bias voltage is substantially identical to the second voltage level of the first electrode.

8. A method for driving a plasma display including a scan electrode and a sustain electrode provided in parallel on a first substrate, and an address electrode provided on a second substrate, the address electrode crossing the scan electrode and the sustain electrode, the method comprising: during a reset period, applying a falling ramp voltage to the scan electrode and applying a first bias voltage to the sustain electrode; and applying a second bias voltage to the sustain electrode after applying the falling ramp voltage, the second bias voltage having a voltage level lower than a voltage level of the first bias voltage; and applying a predetermined voltage to the scan electrode after applying the falling ramp voltage, wherein the falling ramp voltage falls to the predetermined voltage.

9. The method of claim 1 , wherein the first bias voltage is substantially identical to the first voltage.

10. The method of claim 1 , wherein the predetermined voltage is a reference voltage.

11. The method of claim 1 , wherein the predetermined voltage is a negative sustain voltage.

12. A method for driving a plasma display panel including a scan electrode and a sustain electrode provided in parallel on a first substrate, and an address electrode provided on a second substrate, the address electrode crossing the scan electrode and the sustain electrode, the method comprising: during a reset period, applying a ramp voltage to the sustain electrode to a first voltage after a previous sustain period is complete; maintaining the address electrode at a second voltage, maintaining the sustain electrode at a third voltage, and applying a rising ramp voltage to the scan electrode, the rising ramp voltage gradually rising from a fourth voltage to a fifth voltage, the fourth voltage being less than a discharge firing voltage with respect to the sustain electrode and the fifth voltage being greater than the discharge firing voltage; applying a falling ramp voltage to the scan electrode while maintaining the sustain electrode at a first bias voltage, the falling ramp voltage gradually falling to a predetermined voltage from the fourth voltage; and maintaining the sustain electrode at a second bias voltage below the first bias voltage while maintaining the scan electrode at the predetermined voltage after the applying a falling ramp voltage.